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A copper washer is to be fit in place over a steel bolt. Both pieces of metal are at 29.7°C. If the diameter of the bolt is b = 1.0000 cm and the inner diameter of the washer is a = 0.9980 cm, to what temperature must the washer be raised so it will fit over the bolt? Only the copper washer is heated.
An air-filled toroidal solenoid has a mean radius of 15.5cm and a cross-sectional area of 4.95cm2, How many turns does the winding have
q1. a race car has a mass of 718 kg. it starts from rest and travels 45.0 m in 3.0 s. the car is uniformly accelerated
The "reaction time" of the average automobile driver is about 0.7 s. Compute the total distance covered in coming to a stop after a signal is observed from an initial velocity of 15.6 mi/h
The right-side rearview mirror of Mike's car says that objects in the mirror are closer than they appear. What is the focal length of the rearview mirror
An athlete competing in long jump leaves the ground with a speed of 9.14 m/s at an angle of 35.0 ° above the horizontal
Suppose you want a capacitor bank with a total capacitance of 1.450 F and you possess numerous 2.50 mF capacitors. What is the smallest number you could hook together to achieve your goal
In a conversion from military to peacetime use, a missile with a maximum horizontal range of 160 km is being adapted for studying the upper atmosphere
A simple circuit is set up that only consists of a 12 V battery connected to a light bulb with a resistance of 4 Ohms. What current flows through the light bulb
You have to move a 100kg refrigerator up a 20 degree loading ramp into the back of a pickup truck. Determine the acceleration up the incline
An observer, whose eyes are 1.77 m above the ground, is standing 28.0 m away from a tree. The ground is level, and the tree is growing perpendicular to it. The observer's line of sight with treetop makes an angle of 22.0° above the horizontal. How..
At one instant a bicyclist is 50 m due east of a park's flagpole, going due south with a speed of 9 m/s. Then, 24 s later, the cyclist is 45 m due north of the flagpole, going due east with a speed of 20 m/s. For the cyclist in this 24 s interval,..
A 29.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 85.0 N and is directed at the angle of 30.0° above the horizontal. Find out the coefficient of kinetic friction.
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